LSP A, 6.5V Adjustable LDO Linear Regulator. General Description. Features. Applications. LSP9800 Rev of /1/21.

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1 General Description The LSP9800 is a low dropout linear regulator with 1A output current. It is suitable with both low ESR ceramic and electrolytic capacitors, and stable with of 4.7uF ceramic capacitors or higher value. The LSP9800 provide several protections, such as over current protection (OCP), short circuit protection (SCP) and over temperature protection (OTP) to prevent any combination application conditions. The output voltage accuracy is within 2%.LSP9800 is available in SOT223-3L and TO252-3L package. Features Maximum Operating Input Voltage : 6.5V 3-Terminal Adjustable Voltage from 1.25V High PSRR : Up to 65dB Fast Load Transient Response Built-in Over Current Protection Built-in Short Circuit Protection Built-in Over Temperature Protection Stable with Ceramic Capacitors of 4.7uF Package : SOT223-3L, TO252-3L Applications LCD TV / Monitor Set-Top Box Portable DVD player VOIP Telecom Equipment PC / Mother Board NIC / Switch Graphic Card Please be aware that an Important Notice concerning availability, disclaimers, and use in critical applications of LSC products is at the end of this document. 1 of 11

2 Block Diagram & Symbol Ordering Information LSP X XX X Packing Package Output Voltage Output Voltage Package Packing Blank : ADJ E3 : SOT223-3L A : Tape & Reel D3 : TO252-3L 2 of 11

3 Pin Assignment SOT223-3L (Top View) TO252-3L (Top View) 3 VIN 3 VIN 2 VOUT 2 VOUT 1 FB 1 FB Tab is Pin 2 Tab is Pin 2 Pin Descriptions Pin Name FB VOUT VIN Pin Description Feedback Pin Voltage Output Voltage Input 3 of 11

4 Absolute Maximum Ratings(at T A =25 C) Note: Operate over the Absolute Maximum Ratings may cause permanent damage to the device. Exposure to such conditions for extended time may still affect the reliability of the device. Characteristics Symbol Rating Unit VCC Pin Voltage VCC -0.3 to 8 V Feedback Pin Voltage VFB -0.3 to VCC V Storage Temperature Range TSTG -65 to +150 C Maximum Junction Temperature TJC 150 C Thermal Resistance (Junction to Case) Thermal Resistance (Junction to Ambient) Power dissipation SOT223-3L 31 θjc TO252-3L 30 SOT223-3L 125 θja TO252-3L 140 SOT223-3L P D 800 TO252-3L 1000 C/W C/W mw Moisture Sensitivity MSL Please refer the MSL label on the IC package bag/carton for detail Note1: Ratings apply to ambient temperature at 25 C Recommended Operating Conditions Characteristics Min Max Unit Input Voltage 6.5 V Output Current (note) ma Operating Junction Temperature Range C Note: If the power dissipation is high, the internal thermal shutdown protection of LSP9800 will limit the output current. The SOT223 package has lower power dissipation capability than the capability of TO252 because the thermal resistance of SOT223 is higher. 4 of 11

5 Electrical Characteristics (VIN = 5V, TA= 25 C unless otherwise specified.) Parameter Test Conditions Min Typ Max Unit Reference Voltage (VFB) I O = 10mA, T A = 25 o C V Line Regulation I O = 10mA,V OUT+1.5V<V IN<6.5V, T A = 25 o C 0.3 % Load Regulation V IN=3.3V,Vadj=0,0mA<Io<1A, T A = 25 o C 1 % Dropout Voltage (VIN-VOUT) I OUT=1A, VOUT=1%Vout 1.4 V Current Limit (V IN-V OUT) = 5V 1.1 A Thermal Regulation T A = 25 o C, 30ms pulse %/W Ripple Rejection F = 120Hz, C OUT = 25uF,I OUT = 1.0A 65 db Adjust pin current 60 ua Minimum Load Current 3 ma Temperature Stability I O = 10mA 0.5 % Thermal Shutdown Junction temperature 150 Thermal Shutdown Hysteresis 25 o C o C 5 of 11

6 Application Circuit VIN VIN LSP9800 VOUT VOUT FB R1 CIN 4.7uF IFB VFB COUT 4.7uF R2 VOUT=VFB x (1+R2/R1)+IFB x R2 VFB=1.25V ; IFB=60uA The LSP9800 keeps a constant 1.25V between the output pin and the feedback pin. By placing a resistor R1 across these two pins a constant current flows through R1, adding to the IFB current and into the R2 resistor producing a voltage equal to the (1.25/R1)*R2+IFB*R2 which will be added to the 1.25V to set the output voltage. This is summarized in the above equation. Since the minimum load current requirement of the LSP9800 is 3mA, R1 is typically selected to be < 416Ωresistor so that it automatically satisfies the minimum current requirement. Notice that since IFB is typically in the range of 60uA it only adds a small error to the output voltage and should only be considered when a very precise output voltage setting is required. For example, in a typical 3.3V application, R1=124Ω and R2=205Ω can be used. The error due to IFB is only ~0.3% of the nominal set point. The C1, C2 capacitor are 4.7uF (Low ESR Ceramic, MLCC), and its ESR should be larger than 15mΩ, otherwise need to use electrolytic capacitor, and 10uF is a typical value. 6 of 11

7 Typical Characteristics Line Transient Response Line Transient Response Load Transient Response Load Transient Response Dropout Voltage v.s. Output Current Dropout Voltage(V) TA= Iout(mA) Dropout Voltage vs Output Current Output Voltage Ripple and Noise 7 of 11

8 Marking Information (1) SOT223-3L LOGO LSP9800 VYYWWUZ Part ID V YYWW UZ Internal Code Date Code YY Year(09=2009,10=2010,11=2011,12= ) WW Week(01~53) Output Voltage Blank=ADJ (2) TO252-3L LOGO LSC LSP9800 VYYWWUZ Part ID V YYWW UZ Internal Code Date Code YY Year(09=2009,10=2010,11=2011,12= ) WW Week(01~53) Output Voltage Blank=ADJ 8 of 11

9 Mechanical Information (1) Package type: SOT223-3L Unit: mm Symbol Min Max A A A b c D b REF E E e 2.30 BSC L θ 0 o 10 o Gauge Plane 0.30 REF 9 of 11

10 Mechanical Information (Continued) (2) Package type: TO252 Symbol Min Max A A b b REF c c D D REF E E REF e H L L REF Gauge Plane REF L L θ 0 o 8 o Unit: mm 10 of 11

11 MSL (Moisture Sensitive Level) Information IPC/JEDEC J-STD-020D.1 Moisture Sensitivity Levels Table FLOOR LIFE LEVEL TIME CONDITION 1 Unlimited 30 C /85% 2 1 year 2a 4 weeks hours 4 72 hours 5 48 hours a 24 hours 6 Time on Label (TOL) SOAK REQUIREMENTS Accelerated Equivalent 1 Standard ev ev CONDITION TIME TIME TIME CONDITION (hours) (hours) (hours) C /85% +5/-0 NA NA NA C /60% +5/-0 NA NA NA C /60% /-0-1/+0-1/+0 60 C/ 60% C /60% /-0-1/+0-1/+0 60 C/ 60% C /60% / / /-0 60 C/ 60% C /60% / / /-0 60 C/ 60% C /60% / / /-0 60 C/ 60% TOL 30 C /60% NA NA NA Note 1: CAUTION - To use the accelerated equivalent soak conditions, correlation of damage response (including electrical, after soak and reflow), should be established with the standard soak conditions. Alternatively, if the known activation energy for moisture diffusion of the package materials is in the range of ev or ev, the accelerated equivalent may be used. Accelerated soak times may vary due to material properties (e.g.mold compound, encapsulant, etc.). JEDEC document JESD22-A120 provides a method for determining the diffusion coefficient. Note 2: The standard soak time includes a default value of 24 hours for semiconductor manufacturer s exposure time (MET) between bake and bag and includes the maximum time allowed out of the bag at the distributor s facility. If the actual MET is less than 24 hours the soak time may be reduced. For soak conditions of 30 C/60%, the soak time is reduced by 1 hour for each hour the MET is less than 24 hours. For soak conditions of 60 C/60%, the soak time is reduced by 1 hour for each 5 hours the MET is less than 24 hours. If the actual MET is greater than 24 hours the soak time must be increased. If soak conditions are 30 C/60%, the soak time is increased 1 hour for each hour that the actual MET exceeds 24 hours. If soak conditions are 60 C/60%, the soak time is increased 1 hour for each 5 hours that the actual MET exceeds 24 hours. Important Notice and Disclaimer LSC reserves the right to make changes to this document and its products and specifications at any time without notice. Customers should obtain and confirm the latest product information and specifications before final design, purchase or use. LSC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does LSC assume any liability for application assistance or customer product design. LSC does not warrant or accept any liability with products which are purchased or used for any unintended or unauthorized application. No license is granted by implication or otherwise under any intellectual property rights of LSC. LSC products are not authorized for use as critical components in life support devices or systems without express written approval of LSC. 11 of 11